when:
        options.environment = [key1: 12, key2: "${1+2}", key3: null]

        then:
        options.actualEnvironment == [key1: '12', key2: '3', key3: 'null']
    }

    def canAddEnvironmentVariables() {
        when:
        options.environment = [:]

        then:
        options.environment == [:]

        when:
        options.environment('key', 12)

        then: